Problem and Failure Investigation
DOI link for Problem and Failure Investigation
Problem and Failure Investigation book
The investigation of transformer problems or failures is in many respects similar to medical procedures. The health of a transformer can be monitored using the many diagnostic tools available today. Cooperation between parties involved will speed the investigation and lead more easily to a correct conclusion. Application of the transformer in the power system should be determined. A party with expertise in transformer application should confirm that the transformer was properly rated for the purpose for which it was intended and that subsequent operation has been consistent with that intent. Bushings occasionally develop problems such as leaks or high power factor and thermal problems. Problem investigations are sometimes more difficult than failure analysis because some of the internal parts cannot be seen without dismantling the transformer. The objective is determining the cause of the problem or failure, and adequate analysis is obviously necessary if problems are to be solved and failures are to be prevented.